GM5060 Datasheet, PDF (46/85 Pages) List of Unclassifed Manufacturers – GRAPHICS PROCESSING IC PROVIDING HIGH QUALITY IMAGES FOR LCD MONITORS

Genesis Microchip
gm5060 / gm5060-H Data Sheet
Output
brightness
black
contrast
Input
Figure 30. Black / Contrast / Brightness Transfer Function
4.8.4 Input Look-up Table
After RGB color adjustment, a LUT may be optionally enabled. The LUT produces 10-bit output
data for each of 256 input locations. There is a separate table for each red, green and blue
channel. Data is written to the input LUT through the host interface. The three channels may be
written independently or simultaneously with the same values.
Although the LUT produces 10-bit output, the FRC/Scaler blocks that follow utilize an 8-bit data
path. Therefore, a dithering function is performed to increase the bit-depth. Both random-type
and ordered-type dithering methods are available.
The primary use for the input LUT is to perform moire cancellation. This is further described in
Section 4.12.2. Please contact Genesis for appropriate software to determining the LUT entries
when implementing this function.
RGB Data
from RealColor^TM
Block
RGB
Color
Controls
Input
8:10 LUT
INLUT_BYPASS
Figure 31. Input LUT and Dithering
Dither
RANDOM_EN
DITHER_DISABLE
FRC/SCALER
February 2002
38
C5060-DAT-01G